(3GdehShYI GdbQBfjI (B.s (3GdeLdO GdKGfi (B/s - (3GHQGgje GdCHjGQis; (3YHO GdUHhQ eQRhbs ((3GdbGgQI (B:s (3SLd GdYQH,s, 1969)
(3GdeLdO GdKGfi(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbQBf GdcQje s -- (3ehShYGJs